Total views : 302
Mathematical Modeling of the Squirrel Cage Induction Generator based Wind Farm for Sub-Synchronous Resonance Analysis
Background/Objectives: To analyze the SSR phenomenon in a Squirrel Cage Induction Generator based Wind farm connected to series compensated transmission line at varying operating conditions. Methods/Statistical Analysis: There is a remarkable rise in the renewable energy sector in the current energy demand scenario, but their grid integration leads to various power system stability issues. In the case of wind power, wind farms being located far away from the grid, the integration of large scale wind farms to the utility grid requires high transmission line capacity to transport huge amount of wind power. In order to provide the power transfer capability and to improve the system stability, series compensation is the effective solution. But the series compensation may cause SSR oscillations in the system. Eigen value analysis is the method chosen to perform the Small Signal Stability analysis which examines the potential of SSR in the study system. Findings: The study investigates on the application of series capacitor for series compensation which is required during the grid integration. Series compensation of transmission line causes electro-mechanical oscillations at a sub-synchronous frequency which may finally result in serious damages in the system such as shaft failure. In order to perform the Eigen value analysis, detailed mathematical modeling of the system is developed. The pitch angle control is not taken into account while developing the system, whereas the strength of the transmission line is considered. The interconnection of three sub systems provides the complete model of the study system. The identification of system modes and damping of torsional and network modes are analyzed for various wind speed levels, various series compensation levels and various grid impedance levels. It has been observed that different grid impedance levels have a significant effect on the torsional mode oscillations of the system. Application/Improvements: As the overall system model is linearised, optimal control techniques can be developed as an application to mitigate the SSR oscillations and thereby improve the system stability.
Eigen Value Analysis, Grid Integration, Modal Analysis, Squirrel Cage Induction Generator, Sub-Synchronous Resonance.
- Sumper A, Gomis-Bellmunt O, Sudria-Andreu A, Villafafila-Robles R, Rull-Duran J. Response of Fixed Speed Wind Turbines to System Frequency Disturbances. IEEE Trans. Power Systems. 2009 Feb; 24(1):181-92.
- Balance JW, Goldberg S. Subsynchronous Resonance in Series Compensated Transmission Lines. IEEE Trans. on Power Apparatus and Systems. 1973 Sep; 92(5):1649-58.
- Moharana Akshaya Kumar. The University of Western Ontario: Subsynchronous Resonance in Wind Farms. 2012 Oct.
- Mehta Bhinal, Bhatt Praghnesh, Pandya Vivek. Modelling of Fixed Speed Squirrel Cage Induction Generators for Small Signal Stability Assessment. WSEAS Transactions on Power Systems. 2014; 9:1-16.
- Trudnowski DJ, Gentile A, Khan JM, Petritz EM. Fixed-speed wind-generator and wind-park modeling for transient stability studies. IEEE Transactions on Power Systems. 2004 Nov; 19(4):1911-17.
- Zhang J, Dysko A, O’Reilly J, Leithead WE. Modelling and performance of fixed-speed induction generators in power system oscillation stability studies. Electr. Power Syst. Res. 2008 Aug; 78(8):1416-24.
- Wenjuan Du, Jingtian Bi, Wang Tong, Haifeng Wang. Assessing the effect of Grid Connection of Large-Scale Wind Farms on Power System Small-signal Angular Stability. International Scholarly and Scientific Research & Innovation. 2016; 10(13):382-86.
- Padiyar KR. Norwell, MA, USA: Kluwer: Analysis of Subsynchronous Resonance in Power System. 1999.
- First Benchmark Model for Computer Simulation of Subsynchronous Resonance. Date Accessed: 10/1977: Available from: http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=1602087&url=http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1602087.
- Avani H Ranpariya, Parth N Dave. Analysis of Sub synchronous Resonance Using Simulation of IEEE FIRST BENCHMARK Model. International Journal of Engineering Development and Research. 2014; 2(2):1926-31.
- Sindhu Thampatty KC. Adaptive RTRL based neuro controller for damping sub synchronous oscillations using TCSC. Engineering Applications of Artificial Intelligence. 2011 Feb; 24(11):60-76.
- Terms, Definitions and Symbols for Sub-synchronous Oscillations. Date Accessed: 06/1985: Available from: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=&arnumber=4113230&url=http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4113230.
- Yao-Nan Yu. New York: Academic Press Publication: Electric Power System dynamics. 1983.
- Sindhu Thampatty KC, Reghu Raj PC. A Robust DLQG Controller for Damping of Sub - Synchronous Oscillations in a Series Compensated Power System. International Journal of Research in Engineering and Technology. 2014 Apr; 2(4):724-40.
- Anderson PM, Agrawal BL, Van Ness JE. New York: IEEE Publication: Subsynchronous Resonance in Power Systems. 1990.
- Anderson PM, Farmer RG. California: PBLSH Publication: Series Compensation of Power Systems. 1996.
- Pai MA, Sen Gupta DP, Padiyar KR. New Delhi: Narosa publishing house: Small Signal Analysis of power systems. 2009.
- Kundur P. Power System Stability and Control. New York: McGraw-Hill, Inc: The EPRI Power System Engineering Series. 1994.
- Moharana Akshaya, Rajiv K Varma, Ravi Seethapathy. SSR Alleviation by STATCOM in Induction-Generator-Based Wind Farm Connected to Series Compensated Line. IEEE Transactions on Sustainable Energy. 2014 Jul; 5(3):947-57.
- Mohammadpour Hossein Ali, Santi Enrico. Analysis of Sub-synchronous Resonance (SSR) in Doubly-fed Induction Generator (DFIG)-Based Wind Farms. IET Generation, Transmission & Distribution. 2014 Dec; 8(12):1998-2011.
- There are currently no refbacks.
This work is licensed under a Creative Commons Attribution 3.0 License.